IN RECENT years, a number of review articles devoted entirely or partly to electrical changes and arrhythmias during ischemia and infarction have appeared (Wit and Bigger, 1975; Coraboeuf et al., 1976; Arnsdorf, 1977; Elharrar and Zipes, 1977; Bigger et al., 1977; Wit and Cranefield, 1978; Lazzara et al., 1978; Carmeliet, 1978; Cranefield and Wit, 1979). Most of what is known about cellular ele...

The capitellid polychaete genus Dodecaseta McCammon & Stull, 1978 is relocated in Notodasus Fauchald, 1972. Two species are redescribed based on examination of type material and three new combinations are proposed: Notodasus oraria (McCammon & Stull, 1978), N. eibyejacobseni (Green, 2002). N. fauchaldi (Green, 2002). N. kristiani (García-Garza et al., 2009), is synonymized under N. oraria. Some...

the enzyme DpnII, produced by another strain of D. pneumoniae, recognizes the same sequence, but is inhibited by this same methylated base. The significance of the occurrence of modified nucleotides in eukaryotic DNA is not as yet understood, although a relationship between modification and gene expression has been proposed by several workers (Waalwijk & Flavell, 1978; Bird et al., 1979). By us...

The occurrence of membrane vesicles along the male reproductive tract and in the ejaculated semen appears as a common feature among different species, including humans. Indeed, prostasomes (prostate-derived vesicles) were first described in human semen in 1978 (Ronquist et al, 1978), and vesicular structures similar to prostasomes were also found in the seminal plasma of rabbit (Davis, 1978), r...

27. C-L. Schengrund and J. T. Nelson, Biochem. biophys. Res. Commun. 63,217 (1975). 28. H. Rosner, M. Muhleisen, W. Probst and H. Rahmann, Hoppe-Seyler's Z. physiol. Chem. 360, 354 (1979). 29. D. T. Wang, J. S. Horng, F. P. Bymaster, K. L. Hauser and B. B. Molloy, Life Sci. 15,471 (1974). 30. L. Lemberger, H. Rowe, R. Carmichael, R. Crabtree, J. S. Horng, F. Bymaster and D. Wang, Clin. Pharmac....

IN RECENT years, a number of review articles devoted entirely or partly to electrical changes and arrhythmias during ischemia and infarction have appeared (Wit and Bigger, 1975; Coraboeuf et al., 1976; Arnsdorf, 1977; Elharrar and Zipes, 1977; Bigger et al., 1977; Wit and Cranefield, 1978; Lazzara et al., 1978; Carmeliet, 1978; Cranefield and Wit, 1979). Most of what is known about cellular ele...

The naturally occurring polyamines, putrescine, spermidine and spermine, have been implicated in many growth processes and in differentiation (Cohen, 1971; Bachrach, 1973; Russell & Durie, 1978). Their concentrations and the activity of their biosynthetic enzymes increase significantly in proliferating cells (Tabor & Tabor, 1976; Janne & Raina, 1968) and neoplastic tissues (Bachrach, 1978; Russ...

Since the original observation that a high rate of aerobic glycolysis is a hallmark of malignant cells (Warburg, 1926), considerable effort has been devoted to elucidation of the role of glycolysis in normal and transformed cell proliferation. Many explanations have been put forward to explain the high flux of glucose to lactate in proliferating normal and transformed cells (Warburg, 1926; Papa...